Attachment A - 2024 Single Line Diagram & Power Yard .pdf

This is a Single Line Diagram and Power Yard attachment supporting the Maryland state procurement BC-21457-M for 15KV Switch and Transformer Preventative Maintenance. The document provides technical schematic representation of the electrical system configuration for the state's power yard infrastructure, detailing the single line diagram as of 2023-2024. The diagram serves as a reference document for bidders responding to the Invitation for Bid (IFB) to understand the existing electrical equipment layout, switch configurations, and transformer installations that will be subject to preventative maintenance services. This technical documentation enables contractors to assess the scope of work, identify all equipment requiring maintenance services, and develop accurate service proposals based on the specific electrical infrastructure present at the facility.

The single line diagram is an essential technical reference for bidders to evaluate the complexity and extent of the preventative maintenance requirements across the power yard's 15KV equipment. By providing this detailed visual representation of the electrical system configuration, the state enables bidders to develop comprehensive maintenance plans and cost estimates that account for all switches, transformers, and related components requiring service. This technical specification document ensures that all bidders are working from the same baseline understanding of the facility's electrical infrastructure, promoting competitive bidding and accurate project scoping.